Pine64 is one of the most successful 64bit ARM development boards yet, raising $1.7 Million on Kickstarter, shipping to 36,781 backers, it's released as a $15 development board, featuring the 64bit Allwinner A64 Quad-core ARM Cortex-A53 with ARM Mali400 MP2 GPU. Allwinner announces their partnership with Microsoft to get Windows 10 Azure IoT to run on this development board. It can also run several Linux, Android and more.